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Question 1
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
68% (02:58) correct
32%
(02:50) wrong
based on 78
sessions
History
Date
Time
Result
Not Attempted Yet
Question 2
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
96% (00:21) correct 4%
(00:24) wrong
based on 56
sessions
History
Date
Time
Result
Not Attempted Yet
Question 3
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
52% (01:10) correct 48%
(01:06) wrong
based on 82
sessions
History
Date
Time
Result
Not Attempted Yet
Exploration for offshore oil causes environmental problems other than just oil pollution. The routine operations of acquiring oil themselves have a major impact on environmental damage. In drilling an offshore well, operators customarily discard overboard their drill cuttings with some un-separated drilling mud (which is not actually mud but a combination of clay and chemicals). A typical 15,000-foot well usually produces more than 1,000 tons of drill cuttings. In addition, mineral salts, which may have distinctly harmful effects on some forms of marine life, are released from geological formations and are regularly discharged after treatment in the course of production. Localized short-term impacts have been detected as a result of these discharges. Routine discharges like these, together with chronic low-level oil leaks, present 'considerable environmental risk,' the Council on Environmental Quality concluded in its report on OCS oil and gas.
Digging channels for service ships and barges, building docks and other structures at the waterfront, and, to a lesser extent, laying pipeline cause another kind of environmental disruption. Instead of poisoning marine creatures, these activities tend to bury them, choke them, or cut off the light, which is essential to their whole food chain. Most important, dredging and filling change drainage patterns of estuaries and wetlands and can lead to erosion or saltwater intrusion. Increased salinity of the water in marshes and estuaries is usually damaging to the young fish, shellfish, and other organisms residing there. They may not be able to tolerate the higher salinity or they may be decimated by invading predators with an affinity for saltier waters.
Dredging for oil development was responsible for about one-quarter of the loss of 500 square miles of Louisiana marsh in 30 years through 1972, according to studies made at Louisiana State University. From the air, the changes in Louisiana's wetlands from offshore oil activity are striking. For mile after mile in the vast coastal lowlands, the curving, free-form marshes are penetrated by geometrically straight channels-narrow ones for pipelines, broader ones for drill barges and rigs. Spoil from the dredging is piled in ridges on the channel banks, altering the natural drainage from dozens of winding streams. Altogether, the study concluded, dredging, filling, and channelization in the Gulf of Mexico may have caused more damage than pollution from oil.
Digging channels for service ships and barges, building docks and other structures at the waterfront, and, to a lesser extent, laying pipeline cause another kind of environmental disruption. Instead of poisoning marine creatures, these activities tend to bury them, choke them, or cut off the light, which is essential to their whole food chain. Most important, dredging and filling change drainage patterns of estuaries and wetlands and can lead to erosion or saltwater intrusion. Increased salinity of the water in marshes and estuaries is usually damaging to the young fish, shellfish, and other organisms residing there. They may not be able to tolerate the higher salinity or they may be decimated by invading predators with an affinity for saltier waters.
Dredging for oil development was responsible for about one-quarter of the loss of 500 square miles of Louisiana marsh in 30 years through 1972, according to studies made at Louisiana State University. From the air, the changes in Louisiana's wetlands from offshore oil activity are striking. For mile after mile in the vast coastal lowlands, the curving, free-form marshes are penetrated by geometrically straight channels-narrow ones for pipelines, broader ones for drill barges and rigs. Spoil from the dredging is piled in ridges on the channel banks, altering the natural drainage from dozens of winding streams. Altogether, the study concluded, dredging, filling, and channelization in the Gulf of Mexico may have caused more damage than pollution from oil.
1. The primary purpose of the passage is to describe the:
A. causes of oil pollution in and around offshore drilling sites
B. impact of offshore oil drilling on the geography of a region
C. environmental risks associated with offshore oil drilling
D. ways in which offshore oil drilling affects the water quality in a region
E. effects of offshore oil drilling on marine life
A. causes of oil pollution in and around offshore drilling sites
B. impact of offshore oil drilling on the geography of a region
C. environmental risks associated with offshore oil drilling
D. ways in which offshore oil drilling affects the water quality in a region
E. effects of offshore oil drilling on marine life
2. The passage likely comes from a
A. business plan
B. protest speech
C. economic paper
D. environmental report
E. travel guide
A. business plan
B. protest speech
C. economic paper
D. environmental report
E. travel guide
3. Each of the following is mentioned in the passage as an environmental problem associated with offshore oil drilling EXCEPT:
A. pollution from oil leaks
B. seawater intrusion into wetlands
C. pollution of the air by drilling-rig machinery
D. increased levels of mineral salts in coastal waters
E. increased population of certain marine predators
A. pollution from oil leaks
B. seawater intrusion into wetlands
C. pollution of the air by drilling-rig machinery
D. increased levels of mineral salts in coastal waters
E. increased population of certain marine predators
RC Butler 2022 - Practice Two RC Passages Everyday.
Passage # 252 Date: 23-Jun-2022
This question is a part of RC Butler 2022. Click here for Details
Passage # 252 Date: 23-Jun-2022
This question is a part of RC Butler 2022. Click here for Details
04 Jul 2022, 09:46
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In question 1.... why not A ? Just need a help regarding to that.
05 Jul 2022, 00:22
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Aditya89797
Official Explanation
1. The primary purpose of the passage is to describe the:
Difficulty Level: 650
Explanation
This theme is laid out in the first sentences of the passage. All of the other choices, while related to the passage to some extent, are not as comprehensive in summarizing its primary theme as is choice (C).
Answer: C
Difficulty Level: 650
Explanation
This theme is laid out in the first sentences of the passage. All of the other choices, while related to the passage to some extent, are not as comprehensive in summarizing its primary theme as is choice (C).
Answer: C
